Sharp LC-60LE452U - Page 21

Sharp LC-60LE450U/LC-60LE452U Service manual
21
5.2.2 Display Troubleshooting (White Screen)
5.2.3 Display Troubleshooting (Black Screen)
Check the voltage of
1
st
/2
nd
/3
rd
pin of J2
NG
Check the LVDS signal
circuit of J2
OK
Check the external
circuit of Q1
NG
OK
Check the cables
Repair the circuit of
1
st
/2
nd
/3
rd
pin of J2
1.Check the driving
voltage of power board
2.Check the backlight
1.Change power board
2.Change backlight board
OK
NG
OK
NG
Repair the LVDS
signal circuit of J2
Check the screen
voltage of J2
Repair the
external
circuit of
Q8
NG
Change
Q1
OK
Change
U8